Process for preparing dialkyl carbonates

Details Process for preparing dialkyl carbonates Process for preparing dialkyl carbonates

1994-04-22

1995-05-09

Lee, Mary C.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carbonate esters

C07C 6996

Patent

active

054141044

ABSTRACT:
Dialkyl carbonates can be prepared by reaction of carbon monoxide with alkyl nitrites in a continuous gas-phase reaction using a platinum metal catalyst on a metal phosphate support and adding hydrogen halide stepwise or continuously during the course of the reaction in almost quantitative selectivity; the corresponding dialkyl oxalates are formed in such small amounts that in most cases they cannot be detected.

REFERENCES:
patent: 5231213 (1993-07-01), Landscheidt et al.
Chinese Science Bulletin, vol. 34, No. 10, May 1989; "A New Way for Catalytic Synthesis of Dimethyl Carbonate", Z. Yong-bao et al.; page of contents+pp. 875-876.
Zeitschrift fur katalytische forschung vol. 10, No. 1, Mar. 1989, pp. 1-13 (Journal of Catalytic Research [China]); "Erforschung einer neuen methode der katalytischen . . . ", J. Xuan-zhen et al.

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